What Should Seniors Know About Hypothyroidism?
Hypothyroidism, or underactive thyroid, is common in seniors and often goes unrecognized because symptoms overlap with normal aging. Understanding this treatable condition helps seniors identify symptoms and seek appropriate care.
Understanding the Thyroid
The thyroid gland in the neck produces hormones that regulate metabolism throughout the body. Thyroid hormones affect heart rate, body temperature, energy production, and many other functions. When the thyroid produces insufficient hormone, all body systems slow.
Hypothyroidism occurs when the thyroid gland does not produce enough hormone to meet body needs. The most common cause is Hashimoto’s thyroiditis, an autoimmune condition where the immune system attacks the thyroid. Other causes include thyroid surgery, radiation, and certain medications.
Why Hypothyroidism Affects Seniors
Hypothyroidism becomes more common with age, affecting about 10 percent of women and 6 percent of men over 65. The thyroid gland’s function naturally declines somewhat with aging. Autoimmune thyroid disease accumulates over time.
Symptoms in seniors often differ from classic presentations and are frequently attributed to aging. This leads to underdiagnosis. Many seniors with hypothyroidism are not identified without screening.
Symptoms
Classic hypothyroidism symptoms include fatigue, weight gain, cold intolerance, constipation, dry skin, hair loss, and depression. However, seniors may have fewer obvious symptoms.
In seniors, hypothyroidism may present primarily as fatigue, cognitive slowing, or depression. Memory problems, confusion, and slow thinking may be attributed to dementia when thyroid disease is actually responsible. Muscle weakness and joint pain occur.
Physical signs may include slow heart rate, facial puffiness, hoarse voice, and slowed reflexes. Severely low thyroid can cause myxedema, a medical emergency with altered consciousness, hypothermia, and organ failure.
Diagnosis
Thyroid function tests diagnose hypothyroidism. TSH, thyroid stimulating hormone, is the primary screening test. Elevated TSH indicates the pituitary is working harder to stimulate an underperforming thyroid. Free T4 measures actual thyroid hormone level.
Subclinical hypothyroidism shows elevated TSH with normal T4. Whether to treat subclinical hypothyroidism in seniors depends on TSH level, symptoms, and other factors. Guidelines vary on treatment thresholds.
Treatment
Levothyroxine, synthetic thyroid hormone, is the standard treatment. Taken daily, it replaces missing hormone. Proper dosing restores normal thyroid function. Treatment is lifelong for most causes of hypothyroidism.
Seniors typically start at lower doses than younger adults, with gradual increases. Sudden restoration of normal thyroid levels can stress the heart. Careful titration achieves target levels safely.
Regular monitoring ensures appropriate dosing. TSH levels guide dose adjustments. Changes in weight, other medications, or health status may require dose modification.
Getting Thyroid Care
All Seniors Foundation encourages thyroid screening for seniors with suggestive symptoms. Hypothyroidism is easily treated once identified. Contact us if fatigue, cognitive changes, or other symptoms might indicate thyroid problems.
